Considering what our RBs and FB accomplished last season (2nd best rushing numbers in the NFL) our running game with DMC, Bush & Reece is good to go; we don't need to bring anyone in.
From statements made by Action Jackson and Coach Davis during the Jan. 18th press conference, it's clear that our WRs are also considered solid and that we shouldn't expect to see anyone new coming in.
Our TEs are more solid than the WRs, so expect Zach and Brandon again.
It's also certain that Jason Campbell is the Raiders' QB for the 2011 season and very likely that Bruce Gradkowski will remain in the back-up role - Grad was praised in the same press conference, Jason is used to having him as a back-up, and the Raider Nation still adores him (see representative below). There are some who want to bring in a QB, e.g. Vince Young. That is a possibility. However, the odds that a QB would be brought in to challenge Campbell are under 50% and more likely any such move would attempt to upgrade Frye or Boller.
Finally, we have our DBs in place - all fine athletes though several in need of some direction and coaching. Well, we have Rod Woodson now whose come for that very purpose. So I don't see Routt, Branch, Mitchell, Ware or even CJ going anywhere. As for Nnamdi, I hope he'll stay for $10 million/yr or less and wish him well if that's not enough. Personally though, I'd like to see another Safety brought in, i.e. Robert Sands the 6-5 215 lb phenom who's know as Predator at West Virginia.
Of course, the status quo of our skill-positions depends on signing FA's. But the skill positions of the Raiders are, for the most part, locked-in and given our coaching upgrades, we need only address the Offensive Line and Linebacker Corps through the Draft and FA to see dramatic improvements in our two most deficient areas of play: Rush Defense and Pass Blocking.